drivers/bluetooth/dtl1_cs.c

   1 /*
   2  *
   3  *  A driver for Nokia Connectivity Card DTL-1 devices
   4  *
   5  *  Copyright (C) 2001-2002  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License version 2 as
  10  *  published by the Free Software Foundation;
  11  *
  12  *  Software distributed under the License is distributed on an "AS
  13  *  IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
  14  *  implied. See the License for the specific language governing
  15  *  rights and limitations under the License.
  16  *
  17  *  The initial developer of the original code is David A. Hinds
  18  *  <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
  19  *  are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
  20  *
  21  */
  22
  23 #include <linux/config.h>
  24 #include <linux/module.h>
  25
  26 #include <linux/kernel.h>
  27 #include <linux/init.h>
  28 #include <linux/slab.h>
  29 #include <linux/types.h>
  30 #include <linux/sched.h>
  31 #include <linux/errno.h>
  32 #include <linux/ptrace.h>
  33 #include <linux/ioport.h>
  34 #include <linux/spinlock.h>
  35
  36 #include <linux/skbuff.h>
  37 #include <linux/string.h>
  38 #include <linux/serial.h>
  39 #include <linux/serial_reg.h>
  40 #include <asm/system.h>
  41 #include <asm/bitops.h>
  42 #include <asm/io.h>
  43
  44 #include <pcmcia/version.h>
  45 #include <pcmcia/cs_types.h>
  46 #include <pcmcia/cs.h>
  47 #include <pcmcia/cistpl.h>
  48 #include <pcmcia/ciscode.h>
  49 #include <pcmcia/ds.h>
  50 #include <pcmcia/cisreg.h>
  51
  52 #include <net/bluetooth/bluetooth.h>
  53 #include <net/bluetooth/hci_core.h>
  54
  55
  56
  57 /* ======================== Module parameters ======================== */
  58
  59
  60 /* Bit map of interrupts to choose from */
  61 static u_int irq_mask = 0xffff;
  62 static int irq_list[4] = { -1 };
  63
  64 MODULE_PARM(irq_mask, "i");
  65 MODULE_PARM(irq_list, "1-4i");
  66
  67 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
  68 MODULE_DESCRIPTION("Bluetooth driver for Nokia Connectivity Card DTL-1");
  69 MODULE_LICENSE("GPL");
  70
  71
  72
  73 /* ======================== Local structures ======================== */
  74
  75
  76 typedef struct dtl1_info_t {
  77         dev_link_t link;
  78         dev_node_t node;
  79
  80         struct hci_dev *hdev;
  81
  82         spinlock_t lock;                /* For serializing operations */
  83
  84         unsigned long flowmask;         /* HCI flow mask */
  85         int ri_latch;
  86
  87         struct sk_buff_head txq;
  88         unsigned long tx_state;
  89
  90         unsigned long rx_state;
  91         unsigned long rx_count;
  92         struct sk_buff *rx_skb;
  93 } dtl1_info_t;
  94
  95
  96 void dtl1_config(dev_link_t *link);
  97 void dtl1_release(dev_link_t *link);
  98 int dtl1_event(event_t event, int priority, event_callback_args_t *args);
  99
 100 static dev_info_t dev_info = "dtl1_cs";
 101
 102 dev_link_t *dtl1_attach(void);
 103 void dtl1_detach(dev_link_t *);
 104
 105 static dev_link_t *dev_list = NULL;
 106
 107
 108 /* Transmit states  */
 109 #define XMIT_SENDING  1
 110 #define XMIT_WAKEUP   2
 111 #define XMIT_WAITING  8
 112
 113 /* Receiver States */
 114 #define RECV_WAIT_NSH   0
 115 #define RECV_WAIT_DATA  1
 116
 117
 118 typedef struct {
 119         u8 type;
 120         u8 zero;
 121         u16 len;
 122 } __attribute__ ((packed)) nsh_t;       /* Nokia Specific Header */
 123
 124 #define NSHL  4                         /* Nokia Specific Header Length */
 125
 126
 127
 128 /* ======================== Interrupt handling ======================== */
 129
 130
 131 static int dtl1_write(unsigned int iobase, int fifo_size, __u8 *buf, int len)
 132 {
 133         int actual = 0;
 134
 135         /* Tx FIFO should be empty */
 136         if (!(inb(iobase + UART_LSR) & UART_LSR_THRE))
 137                 return 0;
 138
 139         /* Fill FIFO with current frame */
 140         while ((fifo_size-- > 0) && (actual < len)) {
 141                 /* Transmit next byte */
 142                 outb(buf[actual], iobase + UART_TX);
 143                 actual++;
 144         }
 145
 146         return actual;
 147 }
 148
 149
 150 static void dtl1_write_wakeup(dtl1_info_t *info)
 151 {
 152         if (!info) {
 153                 BT_ERR("Unknown device");
 154                 return;
 155         }
 156
 157         if (test_bit(XMIT_WAITING, &(info->tx_state))) {
 158                 set_bit(XMIT_WAKEUP, &(info->tx_state));
 159                 return;
 160         }
 161
 162         if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
 163                 set_bit(XMIT_WAKEUP, &(info->tx_state));
 164                 return;
 165         }
 166
 167         do {
 168                 register unsigned int iobase = info->link.io.BasePort1;
 169                 register struct sk_buff *skb;
 170                 register int len;
 171
 172                 clear_bit(XMIT_WAKEUP, &(info->tx_state));
 173
 174                 if (!(info->link.state & DEV_PRESENT))
 175                         return;
 176
 177                 if (!(skb = skb_dequeue(&(info->txq))))
 178                         break;
 179
 180                 /* Send frame */
 181                 len = dtl1_write(iobase, 32, skb->data, skb->len);
 182
 183                 if (len == skb->len) {
 184                         set_bit(XMIT_WAITING, &(info->tx_state));
 185                         kfree_skb(skb);
 186                 } else {
 187                         skb_pull(skb, len);
 188                         skb_queue_head(&(info->txq), skb);
 189                 }
 190
 191                 info->hdev->stat.byte_tx += len;
 192
 193         } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
 194
 195         clear_bit(XMIT_SENDING, &(info->tx_state));
 196 }
 197
 198
 199 static void dtl1_control(dtl1_info_t *info, struct sk_buff *skb)
 200 {
 201         u8 flowmask = *(u8 *)skb->data;
 202         int i;
 203
 204         printk(KERN_INFO "Bluetooth: Nokia control data =");
 205         for (i = 0; i < skb->len; i++) {
 206                 printk(" %02x", skb->data[i]);
 207         }
 208         printk("\n");
 209
 210         /* transition to active state */
 211         if (((info->flowmask & 0x07) == 0) && ((flowmask & 0x07) != 0)) {
 212                 clear_bit(XMIT_WAITING, &(info->tx_state));
 213                 dtl1_write_wakeup(info);
 214         }
 215
 216         info->flowmask = flowmask;
 217
 218         kfree_skb(skb);
 219 }
 220
 221
 222 static void dtl1_receive(dtl1_info_t *info)
 223 {
 224         unsigned int iobase;
 225         nsh_t *nsh;
 226         int boguscount = 0;
 227
 228         if (!info) {
 229                 BT_ERR("Unknown device");
 230                 return;
 231         }
 232
 233         iobase = info->link.io.BasePort1;
 234
 235         do {
 236                 info->hdev->stat.byte_rx++;
 237
 238                 /* Allocate packet */
 239                 if (info->rx_skb == NULL)
 240                         if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
 241                                 BT_ERR("Can't allocate mem for new packet");
 242                                 info->rx_state = RECV_WAIT_NSH;
 243                                 info->rx_count = NSHL;
 244                                 return;
 245                         }
 246
 247                 *skb_put(info->rx_skb, 1) = inb(iobase + UART_RX);
 248                 nsh = (nsh_t *)info->rx_skb->data;
 249
 250                 info->rx_count--;
 251
 252                 if (info->rx_count == 0) {
 253
 254                         switch (info->rx_state) {
 255                         case RECV_WAIT_NSH:
 256                                 info->rx_state = RECV_WAIT_DATA;
 257                                 info->rx_count = nsh->len + (nsh->len & 0x0001);
 258                                 break;
 259                         case RECV_WAIT_DATA:
 260                                 info->rx_skb->pkt_type = nsh->type;
 261
 262                                 /* remove PAD byte if it exists */
 263                                 if (nsh->len & 0x0001) {
 264                                         info->rx_skb->tail--;
 265                                         info->rx_skb->len--;
 266                                 }
 267
 268                                 /* remove NSH */
 269                                 skb_pull(info->rx_skb, NSHL);
 270
 271                                 switch (info->rx_skb->pkt_type) {
 272                                 case 0x80:
 273                                         /* control data for the Nokia Card */
 274                                         dtl1_control(info, info->rx_skb);
 275                                         break;
 276                                 case 0x82:
 277                                 case 0x83:
 278                                 case 0x84:
 279                                         /* send frame to the HCI layer */
 280                                         info->rx_skb->dev = (void *) info->hdev;
 281                                         info->rx_skb->pkt_type &= 0x0f;
 282                                         hci_recv_frame(info->rx_skb);
 283                                         break;
 284                                 default:
 285                                         /* unknown packet */
 286                                         BT_ERR("Unknown HCI packet with type 0x%02x received", info->rx_skb->pkt_type);
 287                                         kfree_skb(info->rx_skb);
 288                                         break;
 289                                 }
 290
 291                                 info->rx_state = RECV_WAIT_NSH;
 292                                 info->rx_count = NSHL;
 293                                 info->rx_skb = NULL;
 294                                 break;
 295                         }
 296
 297                 }
 298
 299                 /* Make sure we don't stay here too long */
 300                 if (boguscount++ > 32)
 301                         break;
 302
 303         } while (inb(iobase + UART_LSR) & UART_LSR_DR);
 304 }
 305
 306
 307 static irqreturn_t dtl1_interrupt(int irq, void *dev_inst, struct pt_regs *regs)
 308 {
 309         dtl1_info_t *info = dev_inst;
 310         unsigned int iobase;
 311         unsigned char msr;
 312         int boguscount = 0;
 313         int iir, lsr;
 314
 315         if (!info || !info->hdev) {
 316                 BT_ERR("Call of irq %d for unknown device", irq);
 317                 return IRQ_NONE;
 318         }
 319
 320         iobase = info->link.io.BasePort1;
 321
 322         spin_lock(&(info->lock));
 323
 324         iir = inb(iobase + UART_IIR) & UART_IIR_ID;
 325         while (iir) {
 326
 327                 /* Clear interrupt */
 328                 lsr = inb(iobase + UART_LSR);
 329
 330                 switch (iir) {
 331                 case UART_IIR_RLSI:
 332                         BT_ERR("RLSI");
 333                         break;
 334                 case UART_IIR_RDI:
 335                         /* Receive interrupt */
 336                         dtl1_receive(info);
 337                         break;
 338                 case UART_IIR_THRI:
 339                         if (lsr & UART_LSR_THRE) {
 340                                 /* Transmitter ready for data */
 341                                 dtl1_write_wakeup(info);
 342                         }
 343                         break;
 344                 default:
 345                         BT_ERR("Unhandled IIR=%#x", iir);
 346                         break;
 347                 }
 348
 349                 /* Make sure we don't stay here too long */
 350                 if (boguscount++ > 100)
 351                         break;
 352
 353                 iir = inb(iobase + UART_IIR) & UART_IIR_ID;
 354
 355         }
 356
 357         msr = inb(iobase + UART_MSR);
 358
 359         if (info->ri_latch ^ (msr & UART_MSR_RI)) {
 360                 info->ri_latch = msr & UART_MSR_RI;
 361                 clear_bit(XMIT_WAITING, &(info->tx_state));
 362                 dtl1_write_wakeup(info);
 363         }
 364
 365         spin_unlock(&(info->lock));
 366
 367         return IRQ_HANDLED;
 368 }
 369
 370
 371
 372 /* ======================== HCI interface ======================== */
 373
 374
 375 static int dtl1_hci_open(struct hci_dev *hdev)
 376 {
 377         set_bit(HCI_RUNNING, &(hdev->flags));
 378
 379         return 0;
 380 }
 381
 382
 383 static int dtl1_hci_flush(struct hci_dev *hdev)
 384 {
 385         dtl1_info_t *info = (dtl1_info_t *)(hdev->driver_data);
 386
 387         /* Drop TX queue */
 388         skb_queue_purge(&(info->txq));
 389
 390         return 0;
 391 }
 392
 393
 394 static int dtl1_hci_close(struct hci_dev *hdev)
 395 {
 396         if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
 397                 return 0;
 398
 399         dtl1_hci_flush(hdev);
 400
 401         return 0;
 402 }
 403
 404
 405 static int dtl1_hci_send_frame(struct sk_buff *skb)
 406 {
 407         dtl1_info_t *info;
 408         struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
 409         struct sk_buff *s;
 410         nsh_t nsh;
 411
 412         if (!hdev) {
 413                 BT_ERR("Frame for unknown HCI device (hdev=NULL)");
 414                 return -ENODEV;
 415         }
 416
 417         info = (dtl1_info_t *)(hdev->driver_data);
 418
 419         switch (skb->pkt_type) {
 420         case HCI_COMMAND_PKT:
 421                 hdev->stat.cmd_tx++;
 422                 nsh.type = 0x81;
 423                 break;
 424         case HCI_ACLDATA_PKT:
 425                 hdev->stat.acl_tx++;
 426                 nsh.type = 0x82;
 427                 break;
 428         case HCI_SCODATA_PKT:
 429                 hdev->stat.sco_tx++;
 430                 nsh.type = 0x83;
 431                 break;
 432         };
 433
 434         nsh.zero = 0;
 435         nsh.len = skb->len;
 436
 437         s = bt_skb_alloc(NSHL + skb->len + 1, GFP_ATOMIC);
 438         skb_reserve(s, NSHL);
 439         memcpy(skb_put(s, skb->len), skb->data, skb->len);
 440         if (skb->len & 0x0001)
 441                 *skb_put(s, 1) = 0;     /* PAD */
 442
 443         /* Prepend skb with Nokia frame header and queue */
 444         memcpy(skb_push(s, NSHL), &nsh, NSHL);
 445         skb_queue_tail(&(info->txq), s);
 446
 447         dtl1_write_wakeup(info);
 448
 449         kfree_skb(skb);
 450
 451         return 0;
 452 }
 453
 454
 455 static void dtl1_hci_destruct(struct hci_dev *hdev)
 456 {
 457 }
 458
 459
 460 static int dtl1_hci_ioctl(struct hci_dev *hdev, unsigned int cmd,  unsigned long arg)
 461 {
 462         return -ENOIOCTLCMD;
 463 }
 464
 465
 466
 467 /* ======================== Card services HCI interaction ======================== */
 468
 469
 470 int dtl1_open(dtl1_info_t *info)
 471 {
 472         unsigned long flags;
 473         unsigned int iobase = info->link.io.BasePort1;
 474         struct hci_dev *hdev;
 475
 476         spin_lock_init(&(info->lock));
 477
 478         skb_queue_head_init(&(info->txq));
 479
 480         info->rx_state = RECV_WAIT_NSH;
 481         info->rx_count = NSHL;
 482         info->rx_skb = NULL;
 483
 484         set_bit(XMIT_WAITING, &(info->tx_state));
 485
 486         /* Initialize HCI device */
 487         hdev = hci_alloc_dev();
 488         if (!hdev) {
 489                 BT_ERR("Can't allocate HCI device");
 490                 return -ENOMEM;
 491         }
 492
 493         info->hdev = hdev;
 494
 495         hdev->type = HCI_PCCARD;
 496         hdev->driver_data = info;
 497
 498         hdev->open     = dtl1_hci_open;
 499         hdev->close    = dtl1_hci_close;
 500         hdev->flush    = dtl1_hci_flush;
 501         hdev->send     = dtl1_hci_send_frame;
 502         hdev->destruct = dtl1_hci_destruct;
 503         hdev->ioctl    = dtl1_hci_ioctl;
 504
 505         hdev->owner = THIS_MODULE;
 506
 507         spin_lock_irqsave(&(info->lock), flags);
 508
 509         /* Reset UART */
 510         outb(0, iobase + UART_MCR);
 511
 512         /* Turn off interrupts */
 513         outb(0, iobase + UART_IER);
 514
 515         /* Initialize UART */
 516         outb(UART_LCR_WLEN8, iobase + UART_LCR);        /* Reset DLAB */
 517         outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase + UART_MCR);
 518
 519         info->ri_latch = inb(info->link.io.BasePort1 + UART_MSR) & UART_MSR_RI;
 520
 521         /* Turn on interrupts */
 522         outb(UART_IER_RLSI | UART_IER_RDI | UART_IER_THRI, iobase + UART_IER);
 523
 524         spin_unlock_irqrestore(&(info->lock), flags);
 525
 526         /* Timeout before it is safe to send the first HCI packet */
 527         set_current_state(TASK_INTERRUPTIBLE);
 528         schedule_timeout(HZ * 2);
 529
 530         /* Register HCI device */
 531         if (hci_register_dev(hdev) < 0) {
 532                 BT_ERR("Can't register HCI device");
 533                 info->hdev = NULL;
 534                 hci_free_dev(hdev);
 535                 return -ENODEV;
 536         }
 537
 538         return 0;
 539 }
 540
 541
 542 int dtl1_close(dtl1_info_t *info)
 543 {
 544         unsigned long flags;
 545         unsigned int iobase = info->link.io.BasePort1;
 546         struct hci_dev *hdev = info->hdev;
 547
 548         if (!hdev)
 549                 return -ENODEV;
 550
 551         dtl1_hci_close(hdev);
 552
 553         spin_lock_irqsave(&(info->lock), flags);
 554
 555         /* Reset UART */
 556         outb(0, iobase + UART_MCR);
 557
 558         /* Turn off interrupts */
 559         outb(0, iobase + UART_IER);
 560
 561         spin_unlock_irqrestore(&(info->lock), flags);
 562
 563         if (hci_unregister_dev(hdev) < 0)
 564                 BT_ERR("Can't unregister HCI device %s", hdev->name);
 565
 566         hci_free_dev(hdev);
 567
 568         return 0;
 569 }
 570
 571 dev_link_t *dtl1_attach(void)
 572 {
 573         dtl1_info_t *info;
 574         client_reg_t client_reg;
 575         dev_link_t *link;
 576         int i, ret;
 577
 578         /* Create new info device */
 579         info = kmalloc(sizeof(*info), GFP_KERNEL);
 580         if (!info)
 581                 return NULL;
 582         memset(info, 0, sizeof(*info));
 583
 584         link = &info->link;
 585         link->priv = info;
 586
 587         link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
 588         link->io.NumPorts1 = 8;
 589         link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
 590         link->irq.IRQInfo1 = IRQ_INFO2_VALID | IRQ_LEVEL_ID;
 591
 592         if (irq_list[0] == -1)
 593                 link->irq.IRQInfo2 = irq_mask;
 594         else
 595                 for (i = 0; i < 4; i++)
 596                         link->irq.IRQInfo2 |= 1 << irq_list[i];
 597
 598         link->irq.Handler = dtl1_interrupt;
 599         link->irq.Instance = info;
 600
 601         link->conf.Attributes = CONF_ENABLE_IRQ;
 602         link->conf.Vcc = 50;
 603         link->conf.IntType = INT_MEMORY_AND_IO;
 604
 605         /* Register with Card Services */
 606         link->next = dev_list;
 607         dev_list = link;
 608         client_reg.dev_info = &dev_info;
 609         client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
 610         client_reg.EventMask =
 611                 CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
 612                 CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
 613                 CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
 614         client_reg.event_handler = &dtl1_event;
 615         client_reg.Version = 0x0210;
 616         client_reg.event_callback_args.client_data = link;
 617
 618         ret = pcmcia_register_client(&link->handle, &client_reg);
 619         if (ret != CS_SUCCESS) {
 620                 cs_error(link->handle, RegisterClient, ret);
 621                 dtl1_detach(link);
 622                 return NULL;
 623         }
 624
 625         return link;
 626 }
 627
 628
 629 void dtl1_detach(dev_link_t *link)
 630 {
 631         dtl1_info_t *info = link->priv;
 632         dev_link_t **linkp;
 633         int ret;
 634
 635         /* Locate device structure */
 636         for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
 637                 if (*linkp == link)
 638                         break;
 639
 640         if (*linkp == NULL)
 641                 return;
 642
 643         if (link->state & DEV_CONFIG)
 644                 dtl1_release(link);
 645
 646         if (link->handle) {
 647                 ret = pcmcia_deregister_client(link->handle);
 648                 if (ret != CS_SUCCESS)
 649                         cs_error(link->handle, DeregisterClient, ret);
 650         }
 651
 652         /* Unlink device structure, free bits */
 653         *linkp = link->next;
 654
 655         kfree(info);
 656 }
 657
 658 static int get_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse)
 659 {
 660         int i;
 661
 662         i = pcmcia_get_tuple_data(handle, tuple);
 663         if (i != CS_SUCCESS)
 664                 return i;
 665
 666         return pcmcia_parse_tuple(handle, tuple, parse);
 667 }
 668
 669 static int first_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse)
 670 {
 671         if (pcmcia_get_first_tuple(handle, tuple) != CS_SUCCESS)
 672                 return CS_NO_MORE_ITEMS;
 673         return get_tuple(handle, tuple, parse);
 674 }
 675
 676 static int next_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse)
 677 {
 678         if (pcmcia_get_next_tuple(handle, tuple) != CS_SUCCESS)
 679                 return CS_NO_MORE_ITEMS;
 680         return get_tuple(handle, tuple, parse);
 681 }
 682
 683 void dtl1_config(dev_link_t *link)
 684 {
 685         client_handle_t handle = link->handle;
 686         dtl1_info_t *info = link->priv;
 687         tuple_t tuple;
 688         u_short buf[256];
 689         cisparse_t parse;
 690         cistpl_cftable_entry_t *cf = &parse.cftable_entry;
 691         config_info_t config;
 692         int i, last_ret, last_fn;
 693
 694         tuple.TupleData = (cisdata_t *)buf;
 695         tuple.TupleOffset = 0;
 696         tuple.TupleDataMax = 255;
 697         tuple.Attributes = 0;
 698
 699         /* Get configuration register information */
 700         tuple.DesiredTuple = CISTPL_CONFIG;
 701         last_ret = first_tuple(handle, &tuple, &parse);
 702         if (last_ret != CS_SUCCESS) {
 703                 last_fn = ParseTuple;
 704                 goto cs_failed;
 705         }
 706         link->conf.ConfigBase = parse.config.base;
 707         link->conf.Present = parse.config.rmask[0];
 708
 709         /* Configure card */
 710         link->state |= DEV_CONFIG;
 711         i = pcmcia_get_configuration_info(handle, &config);
 712         link->conf.Vcc = config.Vcc;
 713
 714         tuple.TupleData = (cisdata_t *)buf;
 715         tuple.TupleOffset = 0;
 716         tuple.TupleDataMax = 255;
 717         tuple.Attributes = 0;
 718         tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
 719
 720         /* Look for a generic full-sized window */
 721         link->io.NumPorts1 = 8;
 722         i = first_tuple(handle, &tuple, &parse);
 723         while (i != CS_NO_MORE_ITEMS) {
 724                 if ((i == CS_SUCCESS) && (cf->io.nwin == 1) && (cf->io.win[0].len > 8)) {
 725                         link->conf.ConfigIndex = cf->index;
 726                         link->io.BasePort1 = cf->io.win[0].base;
 727                         link->io.NumPorts1 = cf->io.win[0].len; /*yo */
 728                         link->io.IOAddrLines = cf->io.flags & CISTPL_IO_LINES_MASK;
 729                         i = pcmcia_request_io(link->handle, &link->io);
 730                         if (i == CS_SUCCESS)
 731                                 break;
 732                 }
 733                 i = next_tuple(handle, &tuple, &parse);
 734         }
 735
 736         if (i != CS_SUCCESS) {
 737                 cs_error(link->handle, RequestIO, i);
 738                 goto failed;
 739         }
 740
 741         i = pcmcia_request_irq(link->handle, &link->irq);
 742         if (i != CS_SUCCESS) {
 743                 cs_error(link->handle, RequestIRQ, i);
 744                 link->irq.AssignedIRQ = 0;
 745         }
 746
 747         i = pcmcia_request_configuration(link->handle, &link->conf);
 748         if (i != CS_SUCCESS) {
 749                 cs_error(link->handle, RequestConfiguration, i);
 750                 goto failed;
 751         }
 752
 753         if (dtl1_open(info) != 0)
 754                 goto failed;
 755
 756         strcpy(info->node.dev_name, info->hdev->name);
 757         link->dev = &info->node;
 758         link->state &= ~DEV_CONFIG_PENDING;
 759
 760         return;
 761
 762 cs_failed:
 763         cs_error(link->handle, last_fn, last_ret);
 764
 765 failed:
 766         dtl1_release(link);
 767 }
 768
 769
 770 void dtl1_release(dev_link_t *link)
 771 {
 772         dtl1_info_t *info = link->priv;
 773
 774         if (link->state & DEV_PRESENT)
 775                 dtl1_close(info);
 776
 777         link->dev = NULL;
 778
 779         pcmcia_release_configuration(link->handle);
 780         pcmcia_release_io(link->handle, &link->io);
 781         pcmcia_release_irq(link->handle, &link->irq);
 782
 783         link->state &= ~DEV_CONFIG;
 784 }
 785
 786
 787 int dtl1_event(event_t event, int priority, event_callback_args_t *args)
 788 {
 789         dev_link_t *link = args->client_data;
 790         dtl1_info_t *info = link->priv;
 791
 792         switch (event) {
 793         case CS_EVENT_CARD_REMOVAL:
 794                 link->state &= ~DEV_PRESENT;
 795                 if (link->state & DEV_CONFIG) {
 796                         dtl1_close(info);
 797                         dtl1_release(link);
 798                 }
 799                 break;
 800         case CS_EVENT_CARD_INSERTION:
 801                 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
 802                 dtl1_config(link);
 803                 break;
 804         case CS_EVENT_PM_SUSPEND:
 805                 link->state |= DEV_SUSPEND;
 806                 /* Fall through... */
 807         case CS_EVENT_RESET_PHYSICAL:
 808                 if (link->state & DEV_CONFIG)
 809                         pcmcia_release_configuration(link->handle);
 810                 break;
 811         case CS_EVENT_PM_RESUME:
 812                 link->state &= ~DEV_SUSPEND;
 813                 /* Fall through... */
 814         case CS_EVENT_CARD_RESET:
 815                 if (DEV_OK(link))
 816                         pcmcia_request_configuration(link->handle, &link->conf);
 817                 break;
 818         }
 819
 820         return 0;
 821 }
 822
 823 static struct pcmcia_driver dtl1_driver = {
 824         .owner          = THIS_MODULE,
 825         .drv            = {
 826                 .name   = "dtl1_cs",
 827         },
 828         .attach         = dtl1_attach,
 829         .detach         = dtl1_detach,
 830 };
 831
 832 static int __init init_dtl1_cs(void)
 833 {
 834         return pcmcia_register_driver(&dtl1_driver);
 835 }
 836
 837
 838 static void __exit exit_dtl1_cs(void)
 839 {
 840         pcmcia_unregister_driver(&dtl1_driver);
 841
 842         /* XXX: this really needs to move into generic code.. */
 843         while (dev_list != NULL)
 844                 dtl1_detach(dev_list);
 845 }
 846
 847 module_init(init_dtl1_cs);
 848 module_exit(exit_dtl1_cs);